Re: [dm-devel] [PATCH 26/30] ext4: do not send discards as barriers

[Tejun Heo <tj kernel org>]

On 08/25/2010 10:02 PM, Jan Kara wrote:
> On Wed 25-08-10 17:57:41, Tejun Heo wrote:
>> On 08/25/2010 06:00 PM, Christoph Hellwig wrote:
>>> On Wed, Aug 25, 2010 at 05:58:42PM +0200, Christoph Hellwig wrote:
>>>> On Wed, Aug 25, 2010 at 05:47:43PM +0200, Tejun Heo wrote:
>>>>> From: Christoph Hellwig <hch infradead org>
>>>>>
>>>>> ext4 already uses synchronous discards, no need to add I/O barriers.
>>>>
>>>> This needs the patch that Jan sent in reply to my initial version merged
>>>> into it.
>>>
>>> Actually the jbd2 patch needs it merged, but the point still stands.
>>
>> Yeah, wasn't sure about that one.  Has anyone tested it?  I'll be
>> happy to merge it but I have no idea whether it's correct or not and
>> Jan didn't seem to have tested it so...  Jan, shall I merge the patch?
>   I'm quite confident the patch is correct so you can merge it I think but
> tomorrow I'll give it some crash testing together with the rest of your
> patch set in KVM to be sure.

Patch included in the series before jbd2 conversion patch.

Thanks.

-- 
tejun